Blue - #3770This beautiful, lightly variegated thread from Aurifil is a long staple Egyptian cotton, giving the strength needed for high speed machines. Cotton Mako is also mercerized, giving it a sheen. Makò 28 is a slightly heavier thread that can be used for sergers, machine and hand quilting, embroidery and red work. Long arm quilters use this thread for borders and edging. Suggested needle: 90.Color #3770.Made in Italy.